Charles l



(No Model.)

0. L. COPPIN.

PROCESS OF ELECTRIC WELDING. No. 395,878. Patented Jan. 8, 1889.

C I )1 J1 L I M Fig ,2

witnesses.

4 Inventor N. PETERS. hnlbulhognpheh wnhin m. a. c,

UNITED STATES PATENT OEEICE.

CHARLES Ii. (OFFIN, OF DETROIT, MICHIGAN.

PROCESS OF ELECTRIC WELDING.

QIEGI'FICATION forming part of Letters Patent No. 395,878, dated January 8, 1889.

Application filed September 18, 1888. Serial No. 285,742, 1N0 model.)

To all whom it may 0072100771 articles A A the are is sprung,

Be it known that I, CHARLES L. COFFIN, of t Detroit, in the county of \Vayne and State of Improvement in the Process of Electric IV elding, of which the following is a specification.

conneetml with the other pole ofthe generzitor, as by the wire \V; and 13 represents a holder. ItIichigan, have invented a new and useful 1 )[yinvention is an improvement for process of electric welding, relating to the welding of metals by subjecting the same to the action of a voltaic arc; andit consists inreent'orcing the joint by making one of the conductors between which the are is sprung which traverses the joint of metal, so that when fused by the are the molten metal will fall on and re-enforce the'joint.

In the drawings, which are really illustrating diagrams, Figure 1 represents my process applied to that system of welding in which the are is sprung between. two independent conductors, and Fig. 2 represents my invention as applied to that system of electric welding' in which the are is sprung between a conductor and the material to be welded.

In Fig. I, A A represent the articles to be welded; C C, the conductors between which the are is sprung, connected with the poles of an electric generator, as by the wires \Y; and B represents the carbon-holder.

In Fig. 2, A A represent the articles to be welded, connected with one pole of a generator of electricity, as by the wire \V. 0 represents a conductor between which and the Either one otthe conductors in Fig. l in the drawings, t, and the conductor t in Fig. 2 are made wholly or partly of metal suitable to reenforce the welded joint, varying, ot course, with the material to be welded.

In Fig.1 I have shown the conductor made entirely of metal, and in Fig. 2, as shown, the

j lower end of conductor C ismade of metal.

The process herein described of welding twoarticles together, which consists in subjecting the articles to the action of a voltaic are ofwhich onepole is metal conductor, fusmg said conductor, depositingthe molten metal on the joint of the two articles, and reent'orcing said joint by such molten metal, substantially as set forth.

CHARLES I.. (UFFIK \Vi t'nesses:

I'IENRY 13. Lo'rnmP, ADELAIDE A. Axnnnsox. 

